Plextor has updated it's SSD lineup with something new: the M5S. It's based on the same Marvell 88SS9174 controller as Plextor's M3 and M3 Pro, which we've been quite pleased with. While the M3 and M3 Pro shared the exactly same hardware, the M5S introduces some changes. Instead of the Toshiba 24nm Toggle-Mode MLC NAND we found inside the M3/M3 Pro, the M5S uses Micron's 25nm synchronous MLC NAND. Warranty has also been dropped from 5 years to 3 years, and there is no additional clone/backup utility or 2.5" to 3.5" adapter included.